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    CARP - Not able to access the LAN IP of the Backup pfSense machine

    Scheduled Pinned Locked Moved HA/CARP/VIPs
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    • V Offline
      viragomann
      last edited by

      Sorry, that was a mistake.
      It should be
      Source: Network 192.168.1.0/24
      Destination: Network <the alias="" name="" you="" have="" set="" up="" first,="" e.g.="" fw1a2="">of course.</the>

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      • P Offline
        pglover19
        last edited by

        @viragomann:

        Sorry, that was a mistake.
        It should be
        Source: Network 192.168.1.0/24
        Destination: Network <the alias="" name="" you="" have="" set="" up="" first,="" e.g.="" fw1a2="">of course.</the>

        Does not seem to be working.. Do I need to specify anything in the "Translation Address" field?

        Capture.PNG
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        • V Offline
          viragomann
          last edited by

          "Interface address" is fine here.
          The alias contains both LAN addresses of master and backup?

          Please post a screenshot of the outbound NAT page.

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          • P Offline
            pglover19
            last edited by

            @viragomann:

            "Interface address" is fine here.
            The alias contains both LAN addresses of master and backup?

            Please post a screenshot of the outbound NAT page.

            Here you go…

            Capture10.PNG
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            • P Offline
              pglover19
              last edited by

              Well I got the LAN interface working on the pfsense backup machine.  It was the ports on my switch….

              Now I am troubleshooting the WAN interface on the pfsense backup machine. For some reason, I cannot ping the WAN interface (192.168.50.3) on the backup pfsense machine. I am able to ping the pfSense master WAN  IP (192.168.50.2) and the WAN Virtual IP (192.168.50.254) from the 192.168.1.0/24 subnet.. What in world is my problem?

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              • DerelictD Offline
                Derelict LAYER 8 Netgate
                last edited by

                Why would you care about reaching the secondary's WAN interface in that fashion?

                It should work as long as there is outbound NAT out the primary's WAN. if not you will probably be looking at an asymmetric routing issue.

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                • P Offline
                  pglover19
                  last edited by

                  @Derelict:

                  Why would you care about reaching the secondary's WAN interface in that fashion?

                  It should work as long as there is outbound NAT out the primary's WAN. if not you will probably be looking at an asymmetric routing issue.

                  Based on my setup, should I be able to reach the pfSense backup WAN IP (192.168.50.3/24) while the pfSense master machine is active and without an outbound NAT?

                  I assume when the backup becomes the master, I should be able to ping the pfSense backup WAN IP (192.168.50.3/24).

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                  • V Offline
                    viragomann
                    last edited by

                    Yes, it should be reachable if your WAN interfaces and the WAN VIP are in the same network segment and if the firewall rules allow the ping to WAN.

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                    • P Offline
                      pglover19
                      last edited by

                      @viragomann:

                      Yes, it should be reachable if your WAN interfaces and the WAN VIP are in the same network segment and if the firewall rules allow the ping to WAN.

                      I am only able to ping the pfSense backup WAN IP (192.168.50.3) only when there is a failover and the pfSense backup becomes the master. The failover seems to be working fine. Just I cannot figure out this issue.

                      You mentioned firewall rules and outbound NAT rules. Can you provide some detail on specific things to check..

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                      • DerelictD Offline
                        Derelict LAYER 8 Netgate
                        last edited by

                        That is because when the secondary is CARP master it is the node that receives the traffic on the LAN CARP VIP. Again, what are you trying to prove by accessing the secondary's WAN interface from the inside when it is not CARP MASTER?

                        Why did you X.X out the IP addresses on the WAN side in your diagram? Makes it pretty hard to communicate specifics back to you. They are RFC1918. Who cares about protecting/hiding them?

                        Can you ping the secondary's WAN IP address from the primary? Then it's working.

                        Can you ping the secondary's LAN address from LAN? Then it's working.

                        Can the secondary resolve names, check for updates, and check for packages while it is NOT CARP master? Then it's working.

                        Chattanooga, Tennessee, USA
                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                        • P Offline
                          pglover19
                          last edited by

                          @Derelict:

                          That is because when the secondary is CARP master it is the node that receives the traffic on the LAN CARP VIP. Again, what are you trying to prove by accessing the secondary's WAN interface from the inside when it is not CARP MASTER?

                          Why did you X.X out the IP addresses on the WAN side in your diagram? Makes it pretty hard to communicate specifics back to you. They are RFC1918. Who cares about protecting/hiding them?

                          Can you ping the secondary's WAN IP address from the primary? Then it's working.

                          Can you ping the secondary's LAN address from LAN? Then it's working.

                          Can the secondary resolve names, check for updates, and check for packages while it is NOT CARP master? Then it's working.

                          Here is the diagram with the WAN IP addresses unmasked…

                          Drawing1.jpg
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                          • P Offline
                            pglover19
                            last edited by

                            @Derelict:

                            That is because when the secondary is CARP master it is the node that receives the traffic on the LAN CARP VIP. Again, what are you trying to prove by accessing the secondary's WAN interface from the inside when it is not CARP MASTER?

                            Why did you X.X out the IP addresses on the WAN side in your diagram? Makes it pretty hard to communicate specifics back to you. They are RFC1918. Who cares about protecting/hiding them?

                            Can you ping the secondary's WAN IP address from the primary? Then it's working.

                            Can you ping the secondary's LAN address from LAN? Then it's working.

                            Can the secondary resolve names, check for updates, and check for packages while it is NOT CARP master? Then it's working.

                            I cannot ping the pfSense backup WAN IP address (192.168.50.3) from the pfSense master machine (see attachment).
                            I can ping the pfSense backup LAN IP address (10.1.1.3) from the pfSense master machine (see attachment)

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                            • P Offline
                              pglover19
                              last edited by

                              @Derelict:

                              That is because when the secondary is CARP master it is the node that receives the traffic on the LAN CARP VIP. Again, what are you trying to prove by accessing the secondary's WAN interface from the inside when it is not CARP MASTER?

                              Why did you X.X out the IP addresses on the WAN side in your diagram? Makes it pretty hard to communicate specifics back to you. They are RFC1918. Who cares about protecting/hiding them?

                              Can you ping the secondary's WAN IP address from the primary? Then it's working.

                              Can you ping the secondary's LAN address from LAN? Then it's working.

                              Can the secondary resolve names, check for updates, and check for packages while it is NOT CARP master? Then it's working.

                              I got it working.. On the WAN interface on the backup pfSense machine, I had to untick the "Block private networks and loopback addresses" and "Block bogon networks" options. See attachments.

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